Title: Image optimizer breaks WebP fallback
Last modified: April 8, 2026

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# Image optimizer breaks WebP fallback

 *  Resolved [yusefclass](https://wordpress.org/support/users/yusefclass/)
 * (@yusefclass)
 * [2 months ago](https://wordpress.org/support/topic/image-optimizer-breaks-webp-fallback/)
 * After enabling WebP, some browsers show broken images instead of fallback JPG.
   Is there a safe fallback mode?

Viewing 1 replies (of 1 total)

 *  Plugin Author [Mateusz Gbiorczyk](https://wordpress.org/support/users/mateuszgbiorczyk/)
 * (@mateuszgbiorczyk)
 * [2 months ago](https://wordpress.org/support/topic/image-optimizer-breaks-webp-fallback/#post-18875226)
 * Hi [@yusefclass](https://wordpress.org/support/users/yusefclass/),
 * Thank you for your message.
 * Our plugin works like this: “When a browser tries to load an image file, the 
   plugin checks if it supports the AVIF format (if enabled in the plugin settings).
   If so, the browser will receive the equivalent of the original image in the AVIF
   format. If it does not support AVIF, but supports the WebP format, the browser
   will receive the equivalent of the original image in WebP format. In case the
   browser does not support either WebP or AVIF, the original image is loaded. This
   means full support for all browsers.”.
 * If it’s different for you, it means something is preventing the plugin from working
   properly. In that case, I’ll ask you for your website URL and check it for you.
 * Best,
    Mateusz

Viewing 1 replies (of 1 total)

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 * ![](https://ps.w.org/webp-converter-for-media/assets/icon-256x256.png?rev=2636288)
 * [Converter for Media - Optimize images | Convert WebP & AVIF](https://wordpress.org/plugins/webp-converter-for-media/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/webp-converter-for-media/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/webp-converter-for-media/)
 * [Active Topics](https://wordpress.org/support/plugin/webp-converter-for-media/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/webp-converter-for-media/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/webp-converter-for-media/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Mateusz Gbiorczyk](https://wordpress.org/support/users/mateuszgbiorczyk/)
 * Last activity: [2 months ago](https://wordpress.org/support/topic/image-optimizer-breaks-webp-fallback/#post-18875226)
 * Status: resolved